Question

PHYSICS
A tuning fork is used to produce
1.
resonance in a glass tube. The
length of the air column in this tube
can be adjusted by a variable
piston. At room temperature of
27°C two successive resonances
are produced at 20 cm and 73 cm of
column length. If the frequency of
the tuning fork is 320 Hz, the velocity
of sound in air at 27°C is
​

Answer 1

As we have learned @

V=2f(l_{2}-l_{1})

V=2*320*(0.73-0.20)

V=339.2m/s